Demountable rim



Patented Feb. 24, I920.

L a la lisp? 0 IM 1 2 J H W M an w 3 M 5 M q 4 HOME rs UNITED STATES PATENT OFFICE.

LOUIS FRIEDMAN, OF NEW YORK, N. Y.

DEMOUN'IABLE RIM.

Specification of Letters Patent.

Patented Feb. 24, 1920.

Application filed March 19, 1919. swarm. assess.

' To all who! 2'2 may concern.

Be it known that I, Louis FRIEDMAN, a

citizen of the United States. and a resident of the city of New York. borough of Manhattan, in the county and State of New York, have invented a new and Improved Demountable Rim, of which the following a full. clear. and exact description.

The present invention relates to new and useful improvements in wheels for vehicles, and pertains more particularly to means for securing tires thereto;

The invention is particularlyadaptable to Wheels of the clemountable rim type, and has for its primary object to provide a construe tion which Wlll permit of a ready attachment and removal of the deinountable rim.

A further object of the invention is to pro vide means by which the rim is given a movement circumferentialiy of the Wheel to tighten the rim thereon.

A further obj ectof the invention is to provide means by which circumferential move ment'df the rim after the same has been p0 sitioned is prevented.

A further object of the invention is to provide means by which the rim when positioned is prevented from sidewise movement and consequent removal from the wheel.

A. still further object of the invention is to provide means by which the rim is moved cirenmferentially of the wheel to tighten the same thereon.

With the above and other objects in view.

reference is had to the accompanying draw m ss in which 3 is a side View of a. portion of the method of disassembling the Wheel and rim;

Fig. 8 is a detail view;

Fig. 9 is a transverse View on the line 9*!) of 3.

Referring more particularly to the drawings, the reference character 10 designates reference character 27 a fixed rim, said rim being provided with an elongated slot 11 for the rece )tion of the in-' Hating valve of a pneumatic tire. Positioned around the periphery of the fixed rim 10,

are projecting members 12, and said projecting inembers12 are provided with an angularly disposed inner face 13, and an incllned outer face 14. This inclined face 14 terminates in a face 15' angularly disposed with respect thereto.

The reference character 15 designates a demountable rim, said rim being provided with a circular va1ve-receiving opening 10. l

Secured to the demountable rim 15 on its inner face, are a plurality of spacedmembers 17, and said spaced members 17 are each provided with an angularly disposed wall- 18. an inclined face which terminates in'a surface 20, which surface is parallel tothe arc of the demountable rim.

The reference character 19 designates Secured to the fixed rim 10 by means of rivets or the like 21, is a rack member 22, and secured to the inner face of the demountable rim by rivets 23, is a rack member 24. .Vhile these rack members 22 and 2% are shown as secured in place b means of rivets, it is to be understood tii at spot welding or any other suitable means may employed for attaching said rack members,

or, if desired, said rack members may be formed directly in tlie'material from which and demounta-ble "rim' are formed. iThe reference character 25 designates a rectangular projection which is formed'on the inner face of the telly 10, and said projection 25 is so positioned with relation to the projections 17 as to fall opposite to a.

projection 26 carried by the fixed rim 10, when the demountable rim has been prop erly positioned with res ect thereto. T e

which is adapted to be inter osed between the projections 25 and 26 an the next adjacent projections 14 and 17, and said block is secured in'place by means of a screw 28. One end of the block 27 and the adjacent end of the projection 12, are provided with notches 29, and adapted to be received within said notches are the wings 30 of a resilient member 31. Secured to the resilient member 31, by means of a rivet or the, like 32,; is a spring 33, and intermediate of its ends, said spring is'provided with a projecting esignates a block ton ue 34, which is adapted to be received wit in the eye of the screw member 28 to prevent turning thereof.

In assembling the device, the demountable rim 15 is slipped over the fixed rim 10 of the wheel in such a manner that the two racks 22 and 24 will be opposite each other,

as shown in Fig. 3. ,A suitable tool 40 is now engaged with the teeth of the rack members 22 and 24, and if such tool be turned in a direction opposite to that indicated by the arrow in Fig. 7, it will be seen that the inclined faces 19 of the projecting members 17 will ride up the inclined faces 1d of the projecting members 12. and cause the demountable rim to be rigidly retained by the fixed. rim. During this operation, the angularl disposed Wall 18 of the projecting mem rs 17 of the dcmountable rim 15 will ride behind the angularly disposed wall 13 of the projecting members 12, as

this form, it will be understood that the fixed rim 10 is likewise provided with projecting members having oppositely disposed angular walls for interengagement with the projecting members 35. At the base of the angularly disposed walls 36, on each side of the projecting members 35, is an inclined wall 37 and a straight wall 38.

Having thus described the invention, what is claimed as new is i A device of the character described comprisinga wheel, a plurality of spaced lugs arranged about and projecting from the periphery of said wheel, each of said lugs having its outer surface tormedwith an inclined face terminating in a table, the arc of which is parallel to the arc of the wheel, a rim, a plurality ot' lugs carried upon the inner periphery of said rim and having inwardly disposed inclined faces, each of which terminates in a table, the arc of which is parallel to the arc of the rim and adapted to engage the tables of the lugs carried by the wheel, means for moving the rim circumferentially ot' the wheel to cause engagement of said inclined faces and table portions of the lugs, and means for preventing circumferential movement of said rim relative to the wheel, as and for the purpose set forth.

LOUIS FRIEDMAN. 

